* Designed for rear use to be paired with the 4.5 48mm front rim* New brake track texture improves braking performance by as much as 30% over the previous version* Patented molded in spoke hole technologies which eliminate excess material by running continuous uninterrupted carbon fibers around and throughout the entire rim* Handmade in the USA* 56mm deep* 17mm internal width, 25.5mm external width* Includes ENVE brass nipples* 489g* ONLINE SALES PROHIBITED UNLESS AUTHORIZED BY ENVE